When changing an integral to polar coordinates, DxDy becomes rDrDtheta. Can anyone give a satisfying explanation for where this r comes from?

3) The water park is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there.

Complete the square x² - 2x

An icicle is in the shape of an inverted cone with a diameter of 9 mm and a height of 120 mm. The icicle drips at a rate of 75 mm per minute. How long will it take the icicle to completely melt? Use 3.14 for 7. Round the answer to the nearest tenth.

Determining a tangent ratio. what is the value of tan (60) ?

The sum of 3 consecutive even numbers is 408. What is the largest of the numbers

What is the solution for x in the equation? 3x - 42 = - 6x + 21

How many 1 inch cubes are needed to create a rectangular prism that is 6 inches in length, 2 inches in width, and 3 inches in height?

The average person drinks 1 pt of milk a day at this rate, how many gallons will a person drink in a leap year

What is the volume of the figure below which is composed of two cubes with side lengths of 8 units

A cereal box contains 8 1/4 cups of cereal. The nutritional information on the box defines a serving as 3/4 cups. How many servings does this box contain?